Tatta Hitori no Youheidan

We meet Gren. He is a mercenary in a guild. The only person in his guild so far. He has just rescued Cecily and has returned her back to her village. Now, since he's a mercenary, he's got to get paid. When the village can't pay him the ridiculous sum he asks for, he settles for a few things: Food, drink, and? Women.
Of course women! When the time comes, to Gren's disappointment, it's Cecily that shows up. He wants her to switch out with another woman, but after she downs a few cups of booze and crits him with her life story, Gren finds it hard to turn her away.